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2.
Measure Channel 08 GU Resistance
–
Send
*RST
to multiplexer
–
Send
CLOS (@nn08)
to close chan 08, where
nn
= card #
–
Trigger the DMM with
TRIG SGL
and note reading
–
Send
OPEN (@nn08)
to open channel 08
–
Subtract measured value of R25 from DMM reading
–
Enter the result in Table 2-2 for Channel 08 GU
3.
Repeat for Channels 09 - 15 GU and Channels 91 - 92 GU
–
Repeat steps 1 and 2 for channels 09 - 15 GU and 91- 92 GU
–
Use
CLOS (@nncc)
and
OPEN (@nncc)
, where
nn
=
card # and
cc
= channel # (omit leading zeroes in
nn
)
–
For Channel 91 GU, subtract combined value of R25 + R31
–
For Channel 92 GU, subtract combined value of R25 + R28
Example: Closed
Channel Resistance
Test
The following program performs a Closed Channel Resistance Test on
Channels 00 - 15 and 90 - 92 HI, LO, and GU. If the contact resistance for a
channel is >2.0
Ω
, the program displays the message "Resistance for
Channel
chan
Relay is >2.0 Ohms" and stops.
NOTE
Since small measurement variations occur when measuring the protection
resistors, the program returns "0.00" if the calculated resistance is <0
Ω
.
10 ! RE-SAVE "CLOS_TEST"
20 ASSIGN @Dmm TO 722
30 ASSIGN @Mux TO 70914
40 DISP CHR$(129)
50 DIM R(20:31),Value0(8,2),Value1(9,2),Result0(8,2), Result1(9,2),
Path$(2)[2]
60 DATA HI,LO,GU
70 READ Path$(*)
80 !
90
!Measure protection resistors
100 !
110 PRINT "Measure Protection Resistors R20 - R31 "
120 PRINT TABXY(1,3)," 1. Turn mainframe power OFF"
130 PRINT TABXY(1,4)," 2. Remove E1345A Component Assembly
from mainframe"
140 PRINT TABXY(1,5)," 3. Set DMM for 4-wire ohms (OHMF) function
"
150 DISP " Press Continue when ready to measure protection resistors "
160 PAUSE
170 CLEAR SCREEN
180 FOR I=20 TO 31
190 PRINT TABXY(1,4),"Connect DMM leads (4-wire) to resistor R";I
Continued on Next Page
Chapter 2
Verification Tests 29
Содержание Agilent E1345A
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Страница 8: ...Notes 6 E1343A 44A 45A 47A 55A 56A Service Manual ...
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Страница 12: ...Notes 10 What s In This Manual E1343A 44A 45A 47A 55A 56A Service Manual ...
Страница 20: ...Figure 1 2 Initial Incoming Inspection Guidelines 18 General Information Chapter 1 ...
Страница 22: ...Notes 20 General Information Chapter 1 ...
Страница 49: ...Figure 3 2 E1343A E1344A E1345A E1347A Terminal Module Mechanical Parts Chapter 3 Replaceable Parts 47 ...
Страница 50: ...Figure 3 3 E1355A E1356A Terminal Module Mechanical Parts 48 Replaceable Parts Chapter 3 ...
Страница 54: ...Figure 4 1 E1343A E1344A E1345A E1347A Multiplexer Block Diagram 52 Service Chapter 4 ...
Страница 56: ...Figure 4 2 E1355A 56A Multiplexers Block Diagram 54 Service Chapter 4 ...
Страница 64: ...Notes 62 Service Chapter 4 ...
Страница 72: ...Notes 70 Example C Programs Appendix A ...
Страница 81: ...Figure B 2 E1343A 44A 45A 47A Terminal Module Mechanical Parts Appendix B Backdating Information 79 ...
Страница 82: ...Figure B 3 E1355A 56A Terminal Module Mechanical Parts 80 Backdating Information Appendix B ...
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Страница 84: ...Copyright Agilent Technologies Inc 2005 E1345 90013 E1345 90013 ...